Improved head for screws



anca sala @gebaat diiyiw.,

,'lilcttcrs Patent No. 92,361, (lated July 6, 1869.

IMPROVED HEAD FOR SCREWS.

. The Schedule referred to in these Letters Patent and making part 0f thc same.

proved head has been attached, partly in section through 1 theline :r3-, fig. 2. Y

Figure 2 is a detail sectional view of' the same, taken through the line yg. 1.

Figure 3 is a plan view of my improved sheet-metal cap, designed for application to notched fiat-headed screws.

Similar letters of reference indicate corresponding parts.

My invention has for its object tofurnish an-iinproved sheet brass-headedscrew, which shall be so constructed land arranged that the notch or recess for the screw-driver may be formed wholly inthe brass head, which shall still be securely fastened to the orordinary ilat screw-head; `and It consists in the brass head, constructed and arranged, with ret'erence to the ordinary fiat-headed screw, .in the manner hereinafter more fully described.

A represents .the body, and B, the head of an ordinary flat-headed wood-screw,

The head B is notched or slotted, to receive the screw-driver in the ordinary manner.

C is the brass head, which is completely formed before it is attached to the screw A B.

The notch or recess for the screw-driver is formed in the head (1, in such a way as not to cut or breakthe metal, as shown in fig. 1.

.'Ihe head B,of ihe screw A, is then placed in the cavity of the head Unas shown in figs, 1 and 2, and is then lsoldered in this position, the solder flowing into vand filling the space between the'brass head C and the screw-head B, and into and filling the notch or slot of` the said .head B, as shown in iigs. 1 and 2, so as to securely connect the head C to the head of the screw This construction renders it unnecessary that the edge ofthe brass head O should be turned down over the head B of the screw A, as has heretofore been the practice in securing the brass heads to the screw-beads.

This construction enables me to readily attach brass heads to fiat-headedscrews, rendering the cost less than when round-headed screws are used, as has heretoforc been necessary. n

Av great advantage of my improved brass-headed screw over others, upon which the brass heads are spun, is that the notch in the brass head is notent through, so that should the screw-driver slip, it cannot strip ofi' any of the brass head or injure it.

In the case of other brass-headed screws, should the screw-driver slip, a part of' the brass head is almost al,- ways torn ofi', so as tovdestroy the beauty of the screwheads.

This construction also enables the brass heads to be made heavier than the spun heads can be,"so that the screws have all the appearance and about the strength of' solid brass-headed screws.

I ani aware that flat and round-headed screws have `been capped by spinning or closing thin'sheets of' metal over said screw-heads, conforming to their shape.

I am also aware that the notches or slots have been formed in said brass heads, both before and after they have been attached to the screw-heads, but in every instance they have been formed by cutting through the brass head, so asto use the notch in the screw-head for turning the screws.,-

'lhese constructions I do not claim; but

W hat I claim as new, and desire to secure by Letters Patent, is-

\ A rounded sheet-metal cap, provided with a depression or notch, a, f'orined to receive the screw-driver,

without cutting or breaking the metal for that pur` pose, and attached to a flat-headed screw, substantiall y as and for the purpose set f'orth. The above specification of my invention signed by me, this 21st day of' April, 1869. K Y l T. C. RICHARDS.

Witnesses:

FRANK BLOCKLEY, JAMES T. GRAHAM. 

